Remote controller for setting mode according to state of broadcast receiving apparatus

ABSTRACT

A remote control apparatus for setting a mode according to a state of a broadcast receiving apparatus is provided. The remote control apparatus sets operation modes based on information regarding a state of a broadcast receiving apparatus received from the broadcast receiving apparatus. The operation mode of the remote control apparatus is automatically set based on information regarding a state of a broadcast receiving apparatus, so less power is consumed in the remote control apparatus.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation application of U.S. patentapplication Ser. No. 17/469,528 filed Sep. 8, 2021, which is acontinuation application of U.S. patent application Ser. No. 15/909,169filed Mar. 1, 2018, now U.S. Pat. No. 11,153,629, which is acontinuation application of U.S. patent application Ser. No. 14/630,815filed Feb. 25, 2015, now U.S. Pat. No. 9,942,507, which is acontinuation application of U.S. patent application Ser. No. 12/119,756filed May 13, 2008, now U.S. Pat. No. 8,982,284, which claims priorityfrom Korean Patent Application No. 10-2007-0113885, filed on Nov. 8,2007 in the Korean Intellectual Property Office, the disclosures ofwhich are incorporated herein by reference in their entireties.

BACKGROUND OF THE INVENTION 1. Field of the Invention

Apparatuses consistent with the present invention relate to a remotecontroller, and more particularly, to a remote controller which receivesa user command for controlling a broadcast receiving apparatus, andtransmits the received command to the broadcast receiving apparatus.

2. Description of the Related Art

A remote controller is an electronic device used for the remoteoperation of a machine. The remote controller is widely used tomanipulate a television (TV).

The remote controller transmits a command received from a user to a TVvia infrared (IR) radiation. IR radiation is electromagnetic radiationof a wavelength shorter than that of microwaves. IR radiation cannotpenetrate objects, and is inappropriate to transfer massive information.

To solve above drawbacks, a remote controller using radio frequency (RF)communication is provided. However, the type of remote controller hasincrease power consumption.

Therefore, a method is required, which causes a remote controller toconsume less power.

SUMMARY OF THE INVENTION

Exemplary embodiments of the present invention address at least theabove problems and/or disadvantages and other disadvantages notdescribed above. Also, the present invention is not required to overcomethe disadvantages described above, and an exemplary embodiment of thepresent invention may not overcome any of the problems described above.

The present invention provides a remote control apparatus which sets anoperation mode according to information regarding a state of a broadcastreceiving apparatus received from the broadcast receiving apparatus toreduce power consumption, and a method for setting a mode thereof.

The present invention also provides a broadcast receiving apparatuswhich transmits information regarding a state of the broadcast receivingapparatus to a remote control apparatus in order to set an operationmode of the remote control apparatus according to the informationregarding the state of the broadcast receiving apparatus.

According to an exemplary aspect of the present invention, there isprovided a remote control apparatus, comprising a communication modulewhich is connected to a broadcast receiving apparatus for communication;a user input unit which receives a user command regarding the broadcastreceiving apparatus; and a controller which transmits the user commandinput through the user input unit to the broadcast receiving apparatusthrough the communication module, and sets an operation mode accordingto information regarding a state of the broadcast receiving apparatusreceived from the broadcast receiving apparatus through thecommunication module.

If it is determined that the broadcast receiving apparatus is in apredetermined state, the controller may set the remote control apparatusto a mode to consume less power.

The predetermined state may represent that the broadcast receivingapparatus is turned off.

If it is determined that the broadcast receiving apparatus is in thepredetermined state, the controller may set the remote control apparatusto a first mode in which power consumption is reduced, and if the usercommand is not input through the user input unit for a predeterminedtime, the controller may set the remote control apparatus to a secondmode in which power consumption is reduced.

Less power may be consumed in the first mode than in the second mode.

If it is determined that the broadcast receiving apparatus is turned on,the controller may set the remote control apparatus to active mode.

The remote control apparatus may further comprise a display, wherein ifit is determined that video information is received from the broadcastreceiving apparatus through the communication module, the controller mayactivate the display, and display the received information on thedisplay.

The video information may comprise at least one of: information storedin the broadcast receiving apparatus; information acquired by thebroadcast receiving apparatus from an external source; information toinform a user of a predetermined condition; and information relating tostates of devices adjacent to the broadcast receiving apparatus.

The user input unit may receive the user command by detecting at leastone of a user manipulation of elements of the remote control apparatus,and the user moving the remote control apparatus.

According to another exemplary aspect of the present invention, there isprovided a method for setting a mode of a remote control apparatusconnected to a broadcast receiving apparatus for communication, themethod comprising transmitting an input user command to the broadcastreceiving apparatus; and setting an operation mode of the remote controlapparatus according to information regarding a state of the broadcastreceiving apparatus received from the broadcast receiving apparatus.

If it is determined that the broadcast receiving apparatus is in apredetermined state, the setting may set the remote control apparatus toa mode to consume less power.

The predetermined state may represent that the broadcast receivingapparatus is turned off.

If it is determined that the broadcast receiving apparatus is in thepredetermined state, the setting may set the remote control apparatus toa first mode to consume less power, and if the user command is not inputthrough the user input unit for a predetermined time, the setting mayset the remote control apparatus to a second mode to consume less power.

Less power may be consumed in the first mode than in the second mode.

If it is determined that the broadcast receiving apparatus is turned on,the setting may set the remote control apparatus to an active mode.

The method may comprise activating a display if video information isreceived from the broadcast receiving apparatus; and displaying thereceived video information on the display.

The video information may comprise at least one of: information storedin the broadcast receiving apparatus; information acquired by thebroadcast receiving apparatus from an external source; information toinform a user of a predetermined condition; and information relating tostates of devices adjacent to the broadcast receiving apparatus.

The user command may be input by detecting at least one of a usermanipulation of elements of the remote control apparatus, and the usermoving the remote control apparatus.

According to another exemplary aspect of the present invention, there isprovided a broadcast receiving apparatus which receives broadcast, andprovides a user with the received broadcast, the apparatus comprising acommunication module which is connected to a remote control apparatusfor communication; and a controller which controls the broadcastreceiving apparatus according to a user command input from the remotecontrol apparatus through the communication module, and transmitsinformation regarding a state of the broadcast receiving apparatus tothe remote control apparatus through the communication module in orderto set an operation mode of the remote control apparatus according tothe information regarding a state of the broadcast receiving apparatus.

The state of the broadcast receiving apparatus may comprise at least oneof a power off state and a power on state, and the operation mode of theremote control apparatus may comprise a mode to consume less power ofthe remote control apparatus.

The controller may transmit the user command input through an operatingelement of the broadcast receiving apparatus to the remote controlapparatus through the communication module.

According to another exemplary aspect of the present invention, there isprovided a method for controlling a broadcast receiving apparatus whichreceives broadcast, and provides a user with the received broadcast, theapparatus comprising controlling the broadcast receiving apparatusaccording to a user command input from a remote control apparatus; andtransmitting information regarding a state of the broadcast receivingapparatus to the remote control apparatus in order to set an operationmode of the remote control apparatus according to the informationregarding a state of the broadcast receiving apparatus.

The state of the broadcast receiving apparatus may comprise at least oneof a power off state and a power on state, and the operation mode of theremote control apparatus may comprise a mode to consume less power ofthe remote control apparatus.

The method may further comprise transmitting the user command inputthrough an operating element of the broadcast receiving apparatus to theremote control apparatus.

According to another exemplary aspect of the present invention, there isprovided a broadcast receiving system, comprising a remote controlapparatus which transmits an input user command; and a broadcastreceiving apparatus which controls an operation according to the usercommand received from the remote control apparatus, and transmitsinformation regarding a state thereof to the remote control apparatus,wherein the remote control apparatus sets an operation mode thereofaccording to the information received from the broadcast receivingapparatus.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and/or other aspects of the present invention will be moreapparent by describing certain exemplary embodiments of the presentinvention with reference to the accompanying drawings, in which:

FIG. 1 is a view of illustrating an exemplary broadcast receiving systemapplicable to the present invention;

FIG. 2 is a view illustrating the operation between a remote controllerand a digital television (DTV) when a user desires to turn on the DTVusing the remote controller according an exemplary embodiment of thepresent invention;

FIG. 3 is a view illustrating the operation between a remote controllerand a DTV after the DTV is turned on according an exemplary embodimentof the present invention; and

FIG. 4 is a view illustrating the operation between a remote controllerand a DTV when a use desires to turn off the DTV using a power buttonprovided to the DTV according an exemplary embodiment of the presentinvention.

DETAILED DESCRIPTION OF EXEMPLARY EMBODIMENTS OF THE INVENTION

Certain exemplary embodiments of the present invention will now bedescribed in greater detail with reference to the accompanying drawings.

In the following description, same drawing reference numerals are usedfor the same elements even in different drawings. The matters defined inthe description, such as detailed construction and elements, areprovided to assist in a comprehensive understanding of the invention.Thus, it is apparent that the present invention can be carried outwithout those specifically defined matters. Also, well-known functionsor constructions are not described in detail since they would obscurethe invention with unnecessary detail.

FIG. 1 is a view of illustrating a broadcast receiving system applicableto the present invention. Referring to FIG. 1 , a broadcast receivingsystem comprises a DTV 100 as a broadcast receiving apparatus and aremote controller 200.

The DTV 100 provides a user with broadcast received over wire orwirelessly, and the remote controller 200 receives user inputs regardingthe DTV 100. The DTV 100 and the remote controller 200 are communicablylinked to each via radio frequency (RF) communication. The remotecontroller 200 may transmit the input user command to the DTV 100.

The DTV 100 comprises a DTV function block 110, a DTV controller 120,and a DTV communication module 130 as illustrated in FIG. 1 .

The DTV function block 110 performs basic functions of the DTV 100. Thatis, the DTV function block 110 receives a digital broadcast signal,demodulates the received digital broadcast signal, decodes thedemodulated digital broadcast signal, processes the decoded digitalbroadcast signal, and outputs the processed digital broadcast signal toprovide a user with digital broadcast.

The DTV communication module 130 is communicably linked to the remotecontroller 200 for RF communication.

The DTV controller 120 controls the operation of the DTV function block110 according to a user command which is received from the remotecontroller 200 through the DTV communication module 130.

The DTV controller 120 transmits information regarding a state of theoperation of the DTV 100 to the remote controller 200 through the DTVcommunication module 130. The operation state of the DTV 100 may includepower on and off states.

The remote controller 200 comprises a remote control communicationmodule 210, a remote control controller 220, a user input unit 230, anda display 240.

The remote control communication module 210 is communicably linked tothe DTV 100 for RF communication.

The user input unit 230 comprises a motion sensor 232 and a button inputunit 234 to receive a user command.

The motion sensor 232 senses movement of the remote controller 200according to a user manipulation, and transmits the sensed result to theremote control controller 220. In particular, a user moves the remotecontroller 200 up or down, or to the right or left, or rotates theremote controller 200 while holding the remote controller 200. Themotion sensor 232 senses a direction and degree of movement of theremote controller 200, and transmits the sensed result to the remotecontrol controller 220.

The movement of the remote controller 200, caused by a user, may beprocessed as a user command. For example, if a user moves the remotecontroller 200 up or down, or to the right or left, this may be input asa command directing to move a curser or a pointer on the DTV 100 up ordown, or to the right or left.

The motion sensor 232 may be embodied as a gyro sensor to perform theabove functions.

The button input unit 234 may comprise a power button, a volume button,and a selection button, and a user may input a desired command bypressing a corresponding button.

The remote control controller 220 transmits a user command input throughthe user input unit 230 to the DTV 100 through the remote controlcommunication module 210.

The remote control controller 220 sets an operation mode of the remotecontroller 200 based on a DTV operation state and a user command inputstate representing that a user has not input the remote controller 200for a predetermined period of time.

The remote control controller 220 sets the remote controller to anactive mode, an idle mode, or a sleep mode according to the above twostates, which will be explained below in detail.

FIG. 2 is a view illustrating the operation between the remotecontroller 200 and the DTV 100 when a user desires to turn on the DTVusing the remote controller 200.

The remote controller 200 is in the sleep mode (S305), and the DTV 100is in a power off state (S310).

In the sleep mode, the DTV 100 is placed in a state of waiting for apower on command and the remote controller 200 only operates to sense auser pressing on the power button.

Even when the DTV 100 is turned off, the DTV controller 120 and the DTVcommunication module 130 are in an activation state to receive a usercommand transmitted from the remote controller 200.

If a user presses the power button on the button input unit 234(S320-Y), the remote control controller 220 senses that the power buttonis pressed, and activates the remote control communication module 210(S330). The remote control controller 220 transmits a power on commandto the DTV 100 through the remote control communication module 210(S340).

The DTV controller 120 of the DTV 100 receives the power on commandtransmitted in operation S340 through the DTV communication module 130(S350). The DTV controller 120 activates the DTV function block 110 toturn on the DTV 100 (S360).

The DTV controller 120 transmits information regarding a state of theDTV 100, that is a power on state, to the remote controller 200 throughthe DTV communication module 130 (S370).

The remote control controller 220 receives the information regarding thestate of the DTV 100 transmitted in operation S370 through the remotecontrol communication module 210 (S380).

The remote control controller 220 determines the power on state of theDTV 100 from the information received from the DTV 100, and activatesthe display 240, the motion sensor 232, the button input unit 234, andall the buttons of the button input unit 234 excluding the power buttonto change the remote controller 200 to active mode (S390).

As the power button has already been activated, activation of the powerbutton is excluded in operation S390.

When operation S390 is finished, all the elements of the remotecontroller 200 are activated, which represents that the remotecontroller 200 is set to the active mode.

Hereinbelow, the operation between the remote controller 200 and the DTV100 after the DTV 110 is turned on will be explained in detail withreference to FIG. 3 .

The remote controller 200 is in the active mode (S405), and the DTV 100is in a power on state (S410).

If a user inputs a command using the user input unit 230 (S420-Y), theremote control controller 220 senses the input user command, andtransmits the sensed user command to the DTV 100 through the remotecontrol communication module 210 (S430).

The input of the user command in operation S420 is determined accordingto: i) whether the motion sensor 232 senses movement of the remotecontroller 200; or ii) according to whether a user presses a button ofthe button input unit 234.

The DTV controller 120 of the DTV 100 receives the user commandtransmitted in operation S430 through the DTV communication module 130(S440). The DTV controller 120 controls the DTV function block 110 tocarry out the received user command (S450).

If a user does not input a command within thirty seconds (S420-N andS460-Y), the remote control controller 220 sets the remote controller200 to the idle mode (S470).

In the idle mode, the display 240 is set to an inactivation state, andthe remote communication module 210, the motion sensor 232, and thebutton input unit 234 are maintained in an activation state.

Accordingly, in operation S470, the remote control controller 220 setsthe display 240 to an inactivation state.

If a user inputs a command using the user input unit 230 while theremote controller 200 is in the idle mode (S480-Y), the remote controlcontroller 220 sets the remote controller 200 to the active mode (S490).

Accordingly, in operation S490, the remote control controller 220 setsthe display inactivated by operation S470 to an activation state. Afterperforming operation S490, the operation returns to operation S430.

FIG. 4 is a view illustrating the operation between the remotecontroller 200 and the DTV 100 when a use desires to turn off the DTV1100 using a power button of the DTV 100 instead of the remotecontroller 200.

The remote controller 200 is in the active mode (S505), and the DTV 100is in a power on state (S510).

If a user presses a power button of the DTV 100 (S520-Y), the DTVcontroller 120 senses that the power button is pressed, and transmitsinformation regarding a state of the DTV 100, that is a power off state,to the remote controller 200 through the DTV communication module 130(S530). The DTV controller 120 inactivates the DTV function block 110 ofthe DTV 100 to turn off the DTV 100 (S540).

The remote control controller 220 receives the information regarding thestate of the DTV 100 transmitted in operation S530 through the remotecontrol communication module 210 (S550).

The remote control controller 200 perceives that the DTV 100 is turnedoff based on the received information, and inactivates the remotecontrol communication module 210, the display 240, the motion sensor232, and all the buttons of the button input unit 234 excluding thepower button to set the remote controller 200 to the sleep mode (S560).That is, in operation S560, only the function to sense whether the powerbutton is input is activated, while the rest of the functions areinactivated.

FIG. 4 describes the operation between the remote controller 200 and theDTV 100 when a user desires to turn off the DTV 100 using the powerbutton of the DTV 100. However, the user may use a power button of theremote controller 200 instead of the power button of the DTV 100 to turnoff the DTV 100.

The remote control controller 220 senses that the user inputs the powerbutton of the remote controller 200, and transmits a power off commandto the DTV 100 through the remote control communication module 210.

The DTV controller 120 receives the power off command through the DTVcommunication module 130, and inactivates the DTV function block 110 toturn off the DTV 100.

The DTV controller 120 transmits information regarding a state of theDTV 100, that is a power off state to the remote controller 220 throughthe DTV communication module 130. The remote control controller 220receives the information regarding the power off state of the DTV 100through the remote control communication module 210.

The remote control controller 220 perceives the power off state of theDTV 100 based on the received information, and thus sets the remotecontroller 200 to the sleep mode.

According to the exemplary embodiments of the present invention, when auser presses the power button of the DTV 100 to turn off the DTV 100,the remote controller 200 is set to the sleep mode. However, this ismerely an exemplary embodiment of the present invention for a convenientdescription. Alternatively, when the user presses the power button ofthe DTV 100 to turn on the DTV 100, it is possible for the remotecontroller 200 to be set to the active mode.

According to the exemplary embodiments of the present invention, theuser input unit 230 includes the motion sensor 232 to sense the movementof the remote controller 200 and the button input unit 234 to receive auser command. However, this is merely an exemplary embodiment of thepresent invention. Accordingly, the user input unit 230 may employ otherdevices such as a touch screen, a joystick, and a jog wheel, and a usermay input a user command using such devices.

While the state of the DTV 100 is classified as a power on and power offstates according to the exemplary embodiments of the present invention,this is merely an exemplary embodiment of the present invention.Accordingly, other states of the DTV 100 are applicable to the presentinvention. For example, when the DTV 100 is in idle state, or isconnected to external apparatuses, the remote controller 200 may be setto a predetermined mode.

The operation mode of the remote controller 200 is classified as theactive mode, the idle mode, and the sleep mode in the exemplaryembodiment of the present invention. As this is merely an exemplaryembodiment of the present invention, the operation mode of the remotecontroller 200 may be classified as other modes.

Since the idle mode and sleep mode save electrical consumption, any lowpower consuming modes for the remote controller 200 may be applicable toreplace the idle or sleep mode of the present invention. That is, theother modes with different names of descriptions may be applied to thepresent invention.

The exemplary embodiments of the present invention also do not limitthat the remote controller 200 should be set to a lower power consumingmode upon determining the DTV to be in a predetermined state. Therefore,other modes are applicable to the remote controller 200 according to theexemplary embodiment of the present invention.

For example, if it is determined that the DTV 100 transmits videoinformation to the remote controller 200, the remote controller 200 maybe set to a mode for activating the display 240, and display thereceived video information on the display 240.

The video information may be information stored in the DTV 100,information acquired from an external source such as external apparatusor the Internet, information informing a user of a predetermined state,or information regarding a state of devices adjacent to the DTV 100.

For example, the information informing a user of a predetermined statemay include a notification that a predetermined alarm time has expired,and the information regarding a state of devices adjacent to the DTV 100may include a notification that a short message service (SMS) isreceived in a mobile phone.

While the DTV 100 is connected to the remote controller 200 for the RFcommunication in the exemplary embodiment of the present inventiondescribed above, this is merely an exemplary embodiment of the presentinvention. The DTV 100 may be connected to the remote controller 200 forother communication.

While the DTV 100 according to the exemplary embodiment of the presentinvention is described as a broadcast receiving apparatus, otherbroadcast receiving apparatuses may be applied to the present invention,such as other electric devices.

As described above, according to the present invention, an operationmode of a remote control apparatus can be set automatically according toinformation regarding a state of a broadcast receiving apparatus.Accordingly, less power is consumed in the remote control apparatus thanin a conventional remote control apparatus.

The foregoing exemplary embodiments and advantages are merely exemplaryand are not to be construed as limiting the present invention. Thepresent teaching can be readily applied to other types of apparatuses.Also, the description of the exemplary embodiments of the presentinvention is intended to be illustrative, and not to limit the scope ofthe claims, and many alternatives, modifications, and variations will beapparent to those skilled in the art.

What is claimed is:
 1. An electronic system comprising, a displayapparatus; and a remote control apparatus comprising: a firstcommunicator; a user input unit comprising a plurality of buttonsincluding a button for controlling the display apparatus; and a firstcontroller configured to: in response to the button being pressed,control the first communicator to transmit a first signal correspondingto the button to the display apparatus; receive, through the firstcommunicator from the display apparatus, a second signal as a responsewith respect to the first signal; and based on the second signal,control an operating state of at least one electrical component of theremote control apparatus to change from a first state to a second state,wherein the display apparatus comprises: a second communicator; and asecond controller configured to, in response to receiving the firstsignal through the second communicator from the remote controlapparatus, control the second communicator to transmit the second signalto the remote control apparatus, and wherein the at least one electricalcomponent consumes less power in the first state than in the secondstate.
 2. The electronic system of claim 1, wherein the button is apower button for controlling a power of the display apparatus.
 3. Theelectronic system of claim 1, wherein the second signal is a responsesignal for the first signal.
 4. The electronic system of claim 1,wherein the second state is an active state and the first state is asleep state.
 5. The electronic system of claim 4, wherein the at leastone electrical component comprises a motion sensor, and wherein theoperating state of the motion sensor is changed based on the secondsignal.
 6. The electronic system of claim 5, wherein the secondcontroller of the display apparatus is further configured to, inresponse to receiving the first signal through the second communicatorfrom the remote control apparatus, control the second communicator totransmit the second signal to the remote control apparatus based on theoperating state of the display apparatus.
 7. The electronic system ofclaim 6, wherein the second signal indicates a power status of thedisplay apparatus.
 8. The electronic system of claim 6, wherein, inresponse to receiving a third signal through the first communicator fromthe display apparatus, the first controller of the remote controlapparatus is further configured to change the motion sensor in theactive state to the sleep state.
 9. The electronic system of claim 8,wherein the second controller of the display apparatus is furtherconfigured to transmit the third signal to the remote control apparatusin response to pressing a specific button of the display apparatus. 10.The electronic system of claim 1, wherein the first controller isfurther configured to activate the first communicator in response to thebutton being pressed.
 11. An electronic system comprising: a displayapparatus; and a remote control apparatus comprising: a firstcommunicator; a user input unit comprising a plurality of buttons forcontrolling the display apparatus; and a first controller configured to:in response to a user input with respect to the remote controlapparatus, control the first communicator to transmit a first signal;receive, through the first communicator from the display apparatus, asecond signal as a response with respect to the first signal; and basedon the second signal, control an operating state of at least oneelectrical component of the remote control apparatus to change from afirst state to a second state, wherein the display apparatus comprises:a second communicator; a second controller configured to: in response toreceiving the first signal through the second communicator from theremote control apparatus, control the second communicator to transmitthe second signal to the remote control apparatus, and wherein the atleast one electrical component consumes less power in the first statethan in the second state.
 12. The electronic system of claim 11, whereinthe first controller of the remote control apparatus is furtherconfigured to, in response to a button among the plurality of buttonsbeing pressed, control the first communicator to transmit the firstsignal corresponding to the button to the display apparatus.
 13. Theelectronic system of claim 11, wherein the second signal is a responsesignal for the first signal.
 14. The electronic system of claim 11,wherein the second state is an active state and the first state is asleep state.
 15. The electronic system of claim 14, wherein the at leastone electrical component comprises a motion sensor, and wherein theoperating state of the motion sensor is changed based on the secondsignal.
 16. The electronic system of claim 15, wherein the secondcontroller of the display apparatus is further configured to, inresponse to receiving the first signal through the second communicatorfrom the remote control apparatus, control the second communicator totransmit the second signal to the remote control apparatus based on theoperating state of the display apparatus.
 17. The electronic system ofclaim 16, wherein the second signal indicates a power status of thedisplay apparatus.
 18. The electronic system of claim 16, wherein, inresponse to receiving a third signal through the first communicator fromthe display apparatus, the first controller of the remote controlapparatus is further configured to change the motion sensor in theactive state to the sleep state.
 19. The electronic system of claim 18,wherein the second controller of the display apparatus is furtherconfigured to transmit the third signal to the remote control apparatusin response to pressing a specific button of the display apparatus. 20.An electronic system comprising: a display apparatus comprising: a firstcommunicator; and a first controller; and a remote control apparatuscomprising: a second communicator; a motion sensor; a user input unitcomprising a plurality of buttons including a button for controlling thedisplay apparatus; and a second controller configured to: control themotion sensor to operate in a sleep state, and in response to the buttonbeing pressed, based on a first signal received from the displayapparatus through the second communicator, determine to switch themotion sensor from the sleep state to an active state.
 21. Theelectronic system of claim 20, wherein the button is a power button forcontrolling a power of the display apparatus.
 22. The electronic systemof claim 20, wherein power consumption is greater in the active statethan in the sleep state.
 23. The electronic system of claim 20, whereinthe first signal indicates a power status of the display apparatus. 24.The electronic system of claim 20, wherein, in response to receiving asecond signal through the second communicator from the displayapparatus, the second controller of the remote control apparatus isfurther configured to change the motion sensor in the active state tothe sleep state.
 25. The electronic system of claim 24, wherein thefirst controller of the display apparatus is further configured totransmit the second signal to the remote control apparatus in responseto pressing a specific button of the display apparatus.